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Re: [IRCA] Offsets
Pat:
You don't need to receive or decode IBOC to use the station's carrier as a reference for frequency adjustment. A carrier is a carrier.
Chuck
> From: mwdxer@xxxxxxxxx
> To: irca@xxxxxxxxxxxxxxxx
> Date: Wed, 25 Nov 2015 22:49:00 -0800
> Subject: Re: [IRCA] Offsets
>
> Nick,
>
> KSL is the only AM IBOC station I can get at night in HD, but it takes the Eastern Beverage to do it and not every night. AM IBOC is not easy to receive from a distant. FM IBOC is much easier as I get several from Seattle in FM IBOC.
>
> Patrick Martin
> Seaside OR
> KGED QSL Manager
>
> > Date: Thu, 26 Nov 2015 05:02:23 +0000
> > To: irca@xxxxxxxxxxxxxxxx
> > From: nhp@xxxxxxxx
> > Subject: Re: [IRCA] Offsets
> >
> > I'm sure that mwlist would also like more input from the smaller
> > stations Aaron.
> >
> > I have done this before, using an audio scheme that I think is
> > something like you describe. 0.1Hz resolution is more than possible,
> > but as you point out, accuracy may not be as good. I've been saying
> > +/- 0.2Hz, but I think it can be better than that.
> >
> > One other problem is calibrating against stations of known accuracy
> > with low drift. KSL-1160 still seems to be pretty good out west,
> > but IBOC stations don't seem to be as reliable as they once were.
> >
> > At any rate, I am interested, just not sure how much time I can
> > devote to it at least until next spring.
> >
> > best wishes,
> >
> > Nick
> >
> >
> > At 04:01 26-11-15, you wrote:
> > >Is anyone interested in doing a better job of collecting offsets for
> > >North American stations? I know mwlist has some, but they only have
> > >the big US stations. I think European DXers are making most of the
> > >contributions.
> > >
> > >I recently figured out how to get 0.1 hz resolution on my QS1R
> > >(using HDSDR, tuning below the carrier, and using the audio spectrum).
> > >
> > >I'm looking at 1280 now and I see what I think are 30+ carriers!
> > >Very exciting!
> > >
> > >While 0.1 hz accuracy might be hard to achieve (even if your own
> > >receiver can do it - the transmitter won't necessarily be that
> > >stable), we should at least be able to do 1 hz.
> > >
> > >Aaron
> > >Philadelphia, PA
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